Sash-lock



n UNITED STATES PATENT OFFICE.

ARCHIBALD RIDELL, OF CHICAGO, ILLINOIS.

SASH-LOCK.

Specification forming part of Letters Patent No. 51,222. dated November 28, 1865.

To all whom it 'may concern:

Be it known that I, ARCHIBALD RIDELL, of Chicago, in the county ot Cook and State ot' Illinois, have invented an Improved Sash- Lock and I do hereby declare that the following is a full, clear, and exact description of the same, reference heilig had to the accom panying drawings and letters ot' reference marked thereon, making a part ot' this specification, in which- Figure l is a front elevation of my im proved sash-lock, including the sash to which it is attached and the window-frame against which it operates. Fig. 2 is a perspective representation ot my improved sash-lock, including a broken section ofthe sash and frame. Fig. 3 is an elevation ofthe back side of the lock.

rEhe object of my invention is to provide a convenient lock or fastening that can be attached to the sash ot' a window and operate 'against the stop of the window-frame in such a manner as to hold the sash up in any required position.

To enable others skilled in the art to make and use myinven tion, I will describe the method ot' constructing and using the same.

First, as a foundation or substantial part of my sash-lock, I use the plate D, which inform is the quadrant of a circle, and on the circular edge, as shown atm, Imake the ratchet which is used in operating the ratchet-wheel F.

Z represents the common woodscrew by means of' which D is secured to the sash C.

At'E is represented the lever which holds the ratchet-Wheel F in the proper position relative t0 the ratchet m, the wheel F being attached to the lever E by means of the rivet lc in such a manner as to allow the wheel F to revolve upon the same as an axis.

At h is shown the rivet which secures the lever E to the plate D, so as to give a partial revolution to the lever, as shown by the dotted lines m Fig. l.

At E is shown the balancing-weight, which is an enlargement of the lever Ef, and is used to hold up the end of the leversupporting the wheel F, also as a convenient knob by means ot" which the leve'rE and ratchet-wheelF can be operated when raising or lowering the sash C.

At Figs. 2 and 3 are shown the shoulders L on the hack side ot' the balancing-weight E, which are used to lock or shut against the plate D to prevent the ratchet-wheel 'F from heilig' carried oft' from the ratchet my.

Operation: In the drawings shown at Figs. l and 2 my sash-lock is represented attached to the sash C in the position that I intend to use the same. In thedrawings the sash is represented as being locked to prevent the same fromtallingdown. In raising the sash all that is required is to apply the necessary power to the sash in the usual manner; but in letting down the sash it is first necessary to raise the same in order to loosen the ratchet-wheel F and hold the lock in the position shown by the dotted lines w m until the sash C has been run to the required position in the Window-frame A; then adjust the wheel F against the stop B, and the sash will he held in a firm position.

It will be seen that the distance from the rivet lt to the point occupied hy the wheel F on the stop B is greater than a direct line to the stop, by which means sufficient leverage is given to the sash-lock to overcome any ordinary lateral motion ot' the sash C.

Having fully described my device, what I claim as my invention, and desire to secure by Letters Patent of the United States, is-

The combination of the weighted lever with the sector D and wheel F, constructed and arranged suhstantially as described.

ARCHIBALD RIDELL.

Witnesses LEWIS UMLAUE, GEO. L. CHAPIN. 

